I have experienced the same problem a couple of times recently. I have no idea what this might have been, but it definitely sounded like a leaf blower and it happened twice when engine was at normal operating temperature. At first, I thought the noise was coming from outside (somebody using the blower), then, when I realized it is coming from under the hood I stopped and checked. However, I could not pinpoint the problem.
Did you get this resolved and /or look at?
Please share your experience.
sounds like a defective blower module
sounds like a bad blower motor resistor and or plug
depends on where the "squeaky sounds" are coming from. something could be loose, such as a hinge or something. if it screams like a banshee, then its the alternator belt, or the alternator itself. it all just depends on where its coming from
sounds like you have a bad blower motor.. i just replaced one on my 02 deville for the same reason with the same symptoms
Sounds like the heater core is leaking its a big job probably best left to the professionals
Sounds like blower motor module resistor
Sounds like a bad blower motor resistor block.
Possible loose exhaust pipe, check hanger clamps.
Call a vet now!
Bring to a shop and have it scanned to determine problem
Sounds like there may be trash in there..drop the blower motor out,get the debris out, put it back in...simple job...
sounds like typical transmission problem